Cascadia 6 is currently my favorite trail running shoe. That being said I am extremely excited about the Cascadia 7 that will be coming out February 1, 2012. Brooks was getting feedback about the outsole wear, because of this they replaced the circular saw lugs with a more durable configuration. Other than that very little will change; it uses the same rockplate and midsole, including the same BioMoGo DNA material. In order to keep the weight of the shoe comparable to that of the 6’s they reduced the weight of the upper. At the end of the day you will get a more hardcore sole without increasing the weight of the shoe…. A win win in my book!